CaMg2-based alloy hydride material for hydrolysis production of hydrogen, preparation method therefor and use thereof

US10202279B2 · kind B2 · utility

Assignee

• South China University of Technology · CN

Inventors

• Liuzhang Ouyang · Longbeilingcun, CN
• Ruoming Duan · 流花街道, CN
• Hui Wang
• Jiangwen Liu · 流花街道, CN
• Min Zhu · Los Altos Hills, US

Key dates

• Filing date: Dec 29, 2015
• Grant date: Feb 12, 2019
• Expiry date: Dec 29, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/36
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Provided are a CaMg2-based alloy hydride material for hydrolysis production of hydrogen, a preparation method therefor and a use thereof. The material has a general formula of CaMgxMyHz, wherein M is Ni, Co or Fe, 1.5≤x<2.0, 0<y≤0.5, and 3≤z<6. The preparation method for the material comprises the following steps: (1) stacking three pure metal block materials in a crucible, wherein a metal block material M is placed at the top; (2) installing the crucible in a high-frequency induction melting furnace, evacuating and introducing an argon gas; (3) starting the high-frequency induction melting furnace to heat at a low power first, then increasing the power to uniformly fuse same; and thereafter cooling with the furnace to obtain an alloy ingot, and hammer-milling to obtain a hydrogen storage alloy based on CaMg2; and (4) hydrogenating the hammer-milled hydrogen storage alloy to obtain the material for hydrolysis production of hydrogen. The preparation method is simple and low in cost. The material can absorb hydrogen at normal temperature with a good hydrogen absorption performance. The prepared hydrogen is pure, and can be directly introduced into and used in a hydrogen fuel battery.